Comment 3 for bug 1895605

Reviewed: https://review.opendev.org/754433
Committed: https://git.openstack.org/cgit/starlingx/ansible-playbooks/commit/?id=da913270fb04dec483a8bbc7a1a527fa8b7b5cef
Submitter: Zuul
Branch: master

commit da913270fb04dec483a8bbc7a1a527fa8b7b5cef
Author: Tee Ngo <email address hidden>
Date: Fri Sep 25 11:13:25 2020 -0400

    Turn off Ansible pipelining

    Restore the default Ansible pipelining setting (False). Pipelining,
    when enabled, boosts performance by reducing network traffic but
    it can also lead to random bootstrap failures in batch subcloud
    deployment due to ssh timeout (currently default to 10s).

    This setting will be revisited when a test environment, that
    enables a reliable determination of ansible ssh timeout to
    support batch subcloud deployment in a large Distributed Cloud, is
    available.

    Partial-Bug: 1895605
    Change-Id: I423933f34f8dc76aa67db75f689f64dba3ecb164
    Signed-off-by: Tee Ngo <email address hidden>